| Patent Number |
Title Of Patent |
Date Issued |
| 8288585 |
Procatalyst composition with substitute 1,2-phenylene aromatic diester internal donor and method |
October 16, 2012 |
| Disclosed are procatalyst compositions having an internal electron donor which include a substituted phenylene aromatic diester and optionally an electron donor component. Ziegler-Natta catalyst compositions containing the present procatalyst compositions exhibit high activity and produc |
| 8263692 |
Propylene-based polymer, articles, and process for producing same |
September 11, 2012 |
| Disclosed are propylene-based polymer compositions and processes for producing same. Polymerization with an improved catalyst composition provides a propylene-based polymer with improved stiffness. |
| 8222357 |
Procatalyst composition with multiple internal donor having silyl ester and method |
July 17, 2012 |
| Provided is a procatalyst composition containing a multiple internal electron donor with at least two components, one of which is a silyl ester. The other component of the mixed internal electron donor may be an electron donor component. The electron donor component may be an aromatic |
| 8106138 |
Random propylene copolymer compositions, articles and process |
January 31, 2012 |
| The present disclosure is directed to random propylene/.alpha.-olefin compositions, articles, and processes for producing the same. The present compositions contain a random copolymer of propylene and .alpha.-olefin. Polymerization with an improved catalyst composition increases the |
| 8088872 |
Procatalyst composition including silyl ester internal donor and method |
January 3, 2012 |
| The present disclosure provides silyl esters and silyl diol esters suitable as internal electron donors in procatalysts for polymer production. Disclosed are procatalyst compositions formed from a procatalyst precursor and an internal electron donor that is a silyl ester or a silyl d |
| 8067510 |
High melt flow propylene impact copolymer and method |
November 29, 2011 |
| The present disclosure provides a polymerization process for the production of a high melt flow propylene impact copolymer. The process includes contacting an active propylene-based polymer having a melt flow rate greater than about 100 g/10 min with one or more olefins in a polymeri |
| 7989383 |
Self limiting catalyst composition and propylene polymerization process |
August 2, 2011 |
| A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing co |
| 7935766 |
Propylene impact copolymer and method |
May 3, 2011 |
| Disclosed are propylene impact copolymer compositions, articles thereof, and processes for producing same. Polymerization with an improved catalyst composition provides a propylene impact copolymer with high melt flow and low volatiles content. |
| 7893003 |
Catalyst composition with mixed selectivity control agent and method |
February 22, 2011 |
| The present disclosure provides a Ziegler-Natta catalyst composition comprising a procatalyst, a cocatalyst and a mixed external electron donor comprising a first selectivity control agent, a second selectivity control agent, and an activity limiting agent. A polymerization process i |
| 7781363 |
Self limiting catalyst composition and propylene polymerization process |
August 24, 2010 |
| A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing co |
| 7687426 |
Catalyst composition with monocarboxylic acid ester internal donor and propylene polymerization |
March 30, 2010 |
| A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more monoesters of aromatic carboxylic acid internal electron donors; one or more aluminum containing |
| 7678868 |
Self limiting catalyst composition and propylene polymerization process |
March 16, 2010 |
| A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing co |
| 7601664 |
Olefin polymerization catalyst compositions and method of preparation |
October 13, 2009 |
| A method of making a solid procatalyst composition for use in a Ziegler-Natta olefin polymerization catalyst composition, said method comprising: contacting a precursor composition comprising a magnesium compound with a titanium halide compound and an internal electron donor in any |
| 7491670 |
Self limiting catalyst composition and propylene polymerization process |
February 17, 2009 |
| A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing co |
| 7420021 |
Self-extinguishing catalyst composition with monocarboxylic acid ester internal door and propyle |
September 2, 2008 |
| A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more monoesters of aromatic carboxylic acid internal electron donors; one or more aluminum containing |
| 7393910 |
Catalyst composition for ethylene polymerization |
July 1, 2008 |
| A process for the polymerization of olefin monomers comprising contacting ethylene or a mixture of ethylene and one or more C.sub.4-8 .alpha. olefins with a catalyst composition comprising one or more Group 3-10 transition metal containing, Ziegler-Natta, procatalyst compounds; one or |
| 7393806 |
Catalyst composition with monocarboxylic acid ester internal donor and propylene polymerization |
July 1, 2008 |
| A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more monoesters of aromatic carboxylic acid internal electron donors; one or more aluminum containing |
| 7381779 |
Self limiting catalyst composition with dicarboxylic acid ester internal donor and propylene pol |
June 3, 2008 |
| A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing co |
| 7141635 |
Catalyst composition and polymerization process using mixtures of selectivity control agents |
November 28, 2006 |
| A catalyst composition for the polymerization of olefins and process for the use thereof, comprising the combination of one or more Ziegler-Natta catalysts, comprising one or more transition metal compounds, one or more aluminum containing cocatalyts, and a mixture of different selectivi |
